That's all good, but it's not about the August 2023 extension zone.
Obviously there is no hard reliable data available for a scheme that isn't even fully in effect (look at the list of time-limited exemptions!). However, it isn't much of a stretch to believe that if it worked in inner london, it will work in outer london as well. It will likely be a year or two before we have specific data. Also I note the link I provided perfectly supports the claim I made.
There are many news stories online about the Glasgow embarrassment that relate to data from Air Quality Scotland. This is one such example that contains a link to their site:
The controversial zone has been widely panned and it seems it may not even be having the desired impact
www.scottishdailyexpress.co.uk
And that article is bull****:
- comparing 1 month with one other month is bad statistic, especially when ignoring the wider context (like this article does)
- Air pollution is seasonal, so it would be better to compare June 2023 with June 2022 instead of May 2022
- The articles source doesn't actually have data for June 2023, suggesting their "June 2023" figure is from a daily or hourly capture rather than a monthly mean. Hourly/daily means should not be compared to monthly means because of day to day variation (In January there has been a factor 4 difference from 1 day to the next)
- The article was published on 19 June, when no monthly mean data could have existed for June yet, making certain that they are not comparing like for like
Simply put, this stinks of someone who decided they were going to find data suggesting the Glasgow LEZ wasn't working, cherry-picked a day/hour with high air pollution in June, and then wrote an article about it.